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Re: OT. Lightning rod ???
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Posted by RAB on June 17, 2006 at 06:44:31 from (195.93.21.42):
In Reply to: Re: OT. Lightning rod ??? posted by Illinois Boy on June 17, 2006 at 06:24:15:
That is exactly why lightning conductors are earthed very firmly; so that any electrical discharge goes to ground locally, not a long way away!
Their primary function is still to discharge any charge build up BEFORE the potential becomes high enough to cause a strike due to the breakdown of the atmospheric resistance along the path of a flash, resulting in a huge instantaneous discharge of electrical charge and a lot of damage at the point of earth contact.
So, ligtning conductors are there to attempt to PREVENT the flash discharge occurring at that point. They will, of course, dissipate any effects if the flash actually strikes them.
RAB
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